Accession Number:

AD0478182

Title:

TERNARY PHASE EQUILIBRIA IN TRANSITION METAL-BORON-CARBON-SILICON SYSTEMS. PART 1. RELATED BINARY SYSTEMS. VOLUME 5. TA-C SYSTEM. PARTIAL INVESTIGATION IN THE SYSTEMS NB-C AND V-C

Descriptive Note:

Technical rept.

Corporate Author:

AEROJET-GENERAL CORP SACRAMENTO CA MATERIALS RESEARCH LAB

Personal Author(s):

• Rudy, E.
• Harmon, D. P.

Report Date:

1965-12-01

Pagination or Media Count:

90.0

Abstract:

The alloy system tantalum-carbon was investigated by means of X-ray, DTA, and melting point techniques on heat-treated and chemically analyzed alloys a complete phase diagram was established. Analogously to the findings in the Ta-C systems, a previously unknown phase reaction of the Nb2C phase was found to occur at high temperatures. The melting temperatures of the monocarbide phase and the NbC-C eutectic reaction isotherm were redetermined. The alpha- beta-Me2C-phase reaction could not be found in the vanadium-carbon system.

Descriptors:

• *TRANSITION METALS
• *PHASE STUDIES
• *REFRACTORY METAL ALLOYS
• STABILITY
• MICROSTRUCTURE
• CRYSTAL STRUCTURE
• REACTION KINETICS
• THERMODYNAMICS
• HIGH TEMPERATURE
• BIBLIOGRAPHIES
• X RAY DIFFRACTION
• CARBIDES
• IMPURITIES
• QUENCHING
• HEAT TREATMENT
• MELTING POINT
• POWDER METALS
• SILICON ALLOYS
• NIOBIUM ALLOYS
• DIFFERENTIAL THERMAL ANALYSIS
• BORON ALLOYS
• CARBON ALLOYS
• TANTALUM ALLOYS
• VANADIUM ALLOYS

Subject Categories:

• Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE